CN108454354B

CN108454354B - Window electric terminal

Info

Publication number: CN108454354B
Application number: CN201810147968.5A
Authority: CN
Inventors: 斯图尔特·C·萨尔特; 汤姆·F·贝特格; 保罗·肯尼思·德洛克; 詹妮弗·安·高蒂尔; 大卫·C·艾伦
Original assignee: Ford Global Technologies LLC
Current assignee: Ford Global Technologies LLC
Priority date: 2017-02-21
Filing date: 2018-02-13
Publication date: 2023-05-05
Anticipated expiration: 2038-02-13
Also published as: DE102018103582A1; MX2018001959A; CN108454354A; US9997846B1

Abstract

A vehicle includes a window defining an outer surface and an inner surface. An electrical bus is located on the inner surface. An electrical component is located on the window and is electrically connected to the bus. The electrical terminals are located on the bus. The connector is electrically connected with the bus. An adhesive is located between the connector and the electrical bus. A conformal coating is over the connector and the adhesive.

Description

Window electric terminal

Technical Field

The present invention relates generally to windows and, more particularly, to electrical connection of vehicle windows.

Background

Various vehicle windows incorporate electrical components. Thus, new methods and structures for powering these elements are needed.

Disclosure of Invention

According to one aspect of the invention, a vehicle includes a window defining an outer surface and an inner surface. An electrical bus is located on the inner surface. An electrical component is located on the window and electrically connected to the bus. The electrical terminals are located on the bus. The connector is electrically connected to the bus. An adhesive is located between the connector and the electrical bus. A conformal coating (conformal coating) is over the connector and the adhesive.

According to another aspect of the invention, a vehicle includes a window defining an outer surface and an inner surface. An electrical bus is located on the inner surface. The electrical terminals are located on a bus including a connector. The first adhesive and the second adhesive connect the connector to the bus. The second adhesive is electrically conductive. A conformal coating is over the connector and the first and second adhesives.

According to yet another aspect of the invention, a vehicle includes a window. The electrical bus is located on the window. The electrical terminals are located on the bus. The connector defines a leaf spring. The adhesive connects the connector and the bus. The adhesive defines a void through which the spring tab contacts the electrical bus.

According to the present invention, there is provided a vehicle including:

a window defining an outer surface and an inner surface;

an electrical bus on the inner surface;

an electrical component located on the window and electrically connected to the bus; and

an electrical terminal located on a bus, the electrical terminal comprising:

a connector electrically connected to the bus;

an adhesive between the connector and the electrical bus; and

a conformal coating positioned over the connector and the adhesive.

According to one embodiment of the invention, the connector defines a connector piece.

According to one embodiment of the invention, the connector comprises metal.

According to one embodiment of the invention, the electrical component is a heating wire.

According to one embodiment of the invention, the electrical component is an antenna.

According to one embodiment of the invention, the adhesive extends near the periphery of the connector.

According to one embodiment of the invention, the vehicle further comprises:

a frit glaze located between the inner surface of the window and the electrical bus.

According to one embodiment of the invention, a plurality of electrical terminals are located on an electrical bus.

According to the present invention, there is provided a vehicle including:

a window defining an outer surface and an inner surface; and

an electrical bus on the inner surface; and

an electrical terminal located on a bus, the electrical terminal comprising:

a connector;

a first adhesive and a second adhesive connecting the connector to the bus, wherein the second adhesive is electrically conductive; and

a conformal coating positioned over the connector and the first and second adhesives.

According to one embodiment of the invention, the first adhesive substantially surrounds the second adhesive.

According to one embodiment of the invention, the first adhesive is curable by ultraviolet light.

According to one embodiment of the invention, the conformal coating extends onto the electrical bus.

According to one embodiment of the invention, the electrical terminals are configured to transfer electrical energy to an electrical bus.

According to the present invention, there is provided a vehicle including:

a window;

an electrical bus located on the window; and

an electrical terminal located on a bus, the electrical terminal comprising:

a connector defining a leaf spring; and

an adhesive connecting the connector and the bus bar, wherein the adhesive defines a void through which the spring tab contacts the electrical bus bar.

According to one embodiment of the invention, the vehicle further comprises:

conformal coating extending over the connectors, adhesive, and electrical bus.

According to one embodiment of the invention, the spring plate is defined near the center of the connector.

According to one embodiment of the invention, the vehicle further comprises:

and an electrical contact connecting the spring plate and the electrical bus.

According to one embodiment of the invention, the electrical contact comprises at least one of gold, silver, platinum, and copper.

According to one embodiment of the invention, the leaf spring extends towards the inner surface of the window.

According to one embodiment of the invention, the adhesive is electromagnetically curable.

These and other aspects, objects, and features of the present invention will be understood and appreciated by those skilled in the art upon studying the following specification, claims, and appended drawings.

Drawings

The following is a description of the drawings in the drawings. The figures are not necessarily to scale and certain features and certain views of the figures may be shown exaggerated in scale or in schematic for clarity and conciseness.

In the drawings:

FIG. 1A is a perspective view of a vehicle according to at least one example;

FIG. 1B is a front view of a vehicle window according to at least one example;

FIG. 2 is a cross-sectional view taken along line II of FIG. 1B according to at least one example;

FIG. 3A is a cross-sectional view taken along line IIIA of FIG. 1B according to at least one example; and

fig. 3B is a top plan view of a connector according to at least one example.

Detailed Description

Additional features and advantages of the invention will be set forth in the detailed description which follows, and in part will be readily apparent to those skilled in the art from that description or recognized by practicing the invention as described in the detailed description which follows, as well as the claims and appended drawings.

For purposes of the description herein, the terms "upper," "lower," "right," "left," "rear," "front," "vertical," "horizontal," and related derivatives are used in conjunction with the disclosure in the orientation of fig. 1A and 1B. However, it is to be understood that the invention may assume various alternative orientations, except where expressly specified to the contrary. It is also to be understood that the specific devices and processes illustrated in the attached drawings, and described in the following specification are simply exemplary embodiments of the inventive concepts defined in the appended claims. Accordingly, unless the claims expressly state to the contrary, the specific dimensions and other physical characteristics relating to the embodiments disclosed herein are not to be considered as limiting.

As used herein, the term "and/or" when used in a list of two or more items means that any one of the listed items can be used alone, or any combination of two or more of the listed items can be used. For example, if the composition is described as containing components A, B, and/or C, the composition may contain: only A; only B; only C; a and B in combination; a and C in combination; a combination of B and C; or A, B, and C in combination.

In this document, relational terms such as first and second, top and bottom, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

Referring now to FIGS. 1A-3B, a vehicle is indicated generally by the reference numeral 10. The vehicle 10 includes a window 14 defining an outer surface 14A and an inner surface 14B. An electrical bus 18 is located on the inner surface 14B. An electrical component 22 is located on the window 14 and is electrically connected to the bus 18. An electrical terminal 26 is located on the bus 18. The electrical terminals 26 include connectors 30 that are electrically connected to the bus 18. A first adhesive 34 is located between the connector 30 and the electrical bus 18. A conformal coating 38 is positioned over the connector 30 and the first adhesive 34.

Referring now to FIG. 1A, a vehicle 10 may include a plurality of windows 14. For example, window 14 may include a rear window, a triangular window, a side window, a windshield, a moon roof, and/or other transparent objects located at the perimeter of vehicle 10. Window 14 may include various functions such as heating the placement location (e.g., heating the windshield wiper), defrosting, heads-up display, accent lighting, functional lighting, and combinations thereof.

Referring now to fig. 2, an example of a rear view of window 14 is depicted, including an inner surface 14B and an outer surface 14A (fig. 1). Window 14 may be made of glass, a polymeric material, and/or combinations thereof. A frit glaze (frit) 50 is located on the inner surface 14B of the window 14. The frit glaze 50 may be used to block light partially or fully through a portion of the window 14, or may impart color to the glass sheet for decorative, aesthetic, or functional purposes. In various examples, the frit glaze 50 may be electrically conductive such that the frit glaze 50 may be used in conjunction with the electrical bus 18. The frit glaze 50 may additionally and/or alternatively be used in the vehicle 10 to protect the adhesive bonding the glass to the vehicle 10 from solar ultraviolet light, conceal wires and other hardware behind the glass, and also provide a filter to control the amount of sunlight allowed into the vehicle 10, such as "halftoning" on moon roofs and certain backlights. For example, the use of the frit glaze 50 may be advantageous to mask the electrical bus 18 when viewing the window 14 from outside the vehicle 10. It should be appreciated that one or more panels and/or trim pieces may be used to conceal the electrical bus 18 and/or the electrical terminals 26 from view within the vehicle 10. Other uses of the frit glaze 50 may include using the frit glaze 50 to mask vehicle body openings, to block ultraviolet or infrared light, and to provide a graphical pattern to the vehicle 10. According to various examples, the frit glaze 50 may be positioned between the interior surface 14B of the window 14 and the electrical bus 18. In other words, the electrical bus 18 may be positioned on the frit glaze 50.

The electrical component 22 of the window 14 may be located on the inner surface 14B, the outer surface 14A, or within the window 14. For example, window 14 may comprise two sheets of transparent material (e.g., glass, plastic, etc.) with electrical component 22 sandwiched therebetween. According to various examples, the electrical component 22 may be electrically connected to the electrical bus 18 and configured to receive power from the electrical bus 18. The electrical component 22 may include a heater wire (e.g., for rear defrost, front defrost, wiper defrost, etc.), an antenna (e.g., AM band, FM band, diversity antenna, etc.), a display (e.g., organic light emitting diode, liquid crystal, etc.), a lighting element, and/or combinations thereof. In the example of the heating wire and antenna of the electrical component 22, the electrical component 22 may be made of wires, transparent conductive oxides, and/or combinations thereof. It should be appreciated that a plurality of separate electrical components 22 may be used on and in window 14 without departing from the teachings provided herein. In some examples, each electrical component 22 may be separately powered by a separate electrical bus 18. In other examples, the electrical components 22 may share a common electrical bus 18, but may instead have separate electrical terminals 26 electrically connected to separate electrical components 22.

As described above, the window 14 may include a single or multiple electrical buses 18 positioned around the window 14. Although shown on the side of window 14, it should be understood that electrical bus 18 may be positioned toward the top of window 14, toward the bottom of window 14, or anywhere in between. Locating the electrical bus 18 near the perimeter or edge of the window 14 may facilitate hiding the electrical bus 18 using the frit glaze 50 and/or trim components. The electrical bus 18 may be made of a conductive epoxy (e.g., silver, gold, platinum, copper-containing epoxy), a transparent conductive oxide (e.g., indium tin oxide), or may be made of a strip of conductive material (e.g., silver, copper, gold, platinum, etc.). In examples where the electrical bus 18 is made of conductive epoxy and/or transparent conductive oxide, the electrical bus 18 may be baked or fired onto the substrate of the window 14. The thickness of the electrical bus 18 may be between about 1 μm and about 10 μm, or between about 3 μm and about 6 μm. After firing, the thickness of the electrical bus 18 may be between about 1 μm and about 25 μm, or between about 8 μm and about 14 μm, or between about 10 μm and about 12 μm. The electrical bus 18 may include one or more alloys or coloring materials to aid in electrical bus 18 conduction. As described above, each electrical bus 18 may include a single or multiple electrical terminals 26.

With continued reference to the example depicted in fig. 2, electrical terminals 26 are located on electrical bus 18. The electrical bus 18 may be polished or ground at the location where the electrical terminals 26 are placed. Polishing and/or buffing the electrical bus 18 prior to placement of the electrical terminals 26 may facilitate greater engagement or adhesion between the electrical terminals 26 and the electrical bus 18. In the depicted example, each electrical terminal 26 includes a connector 30, a first adhesive 34, a second adhesive 60, and a conformal coating 38. The connector 30 may be constructed of a metal (e.g., copper, silver, platinum, gold, etc.). The connector 30 may take a variety of shapes including square, rectangular, triangular, circular, oval, or higher order polygons. In the depicted example, the connector 30 defines a connector piece 30A, the connector piece 30A configured as an access point for providing electrical power to the electrical terminals 26. The connector piece 30A may be referred to as a tap connector. For example, wires electrically connected to the electrical system of the vehicle 10 may be crimped onto the connector piece 30A to provide power to the electrical bus 18. The connector piece 30A may be thinner or thicker than the rest of the connector 30. The use of a thicker connector piece 30A than the connector 30 may advantageously provide an increased area for making electrical connection with the electrical terminals 26 and a reduced likelihood of the connector piece 30A being damaged during connection. Connector tab 30A may protrude from one side of electrical terminal 26 to extend outwardly beyond conformal coating 38 and electrical bus 18. Although depicted as extending beyond one side of connector 30, connector piece 30A may protrude from connector 30 at an angle or in a vertically upward direction without departing from the teachings provided herein. The connector piece 30A may protrude from the conformal coating 38 or may be covered by the conformal coating 38 after electrically connecting the connector piece 30A (e.g., to the electrical system of the vehicle 10). In other words, the connector 30 and the connector piece 30A serve as attachment and transmission points for supplying power to the electrical terminals 26. Thus, the electrical terminals 26 are configured to transfer electrical energy to the electrical bus 18.

The first and

second adhesives

34, 60 may cooperate to secure the connector 30 of the electrical terminal 26 to the electrical bus 18. The first adhesive 34 may extend near the perimeter of the connector 30. For example, the first adhesive 34 may extend around a portion, a majority, or all of the connector 30. The first adhesive 34 may define a void at its center. The voids may be formed in the first adhesive 34 by an application method (e.g., disposing the first adhesive 34 only near the perimeter of the connector 30) or by a post-processing technique (e.g., die cutting to form holes or voids in the first adhesive 34). The height or thickness of the first adhesive 34 may be between about 0.1mm to about 2.0mm, or between about 0.6mm to about 1.5 mm. The first adhesive 34 may be formed of epoxy, polyurethane, other chemical adhesives, and/or combinations thereof. According to various examples, the first adhesive 34 may be configured as a tape. In a tape example of the first adhesive 34, the first adhesive 34 may be referred to as a peel-and-stick tape, wherein a protective coating (e.g., plastic film, paper, etc.) is removed from the first adhesive 34 prior to application to the electrical bus 18. The peel-and-stick tape example of the first adhesive 34 may be advantageous in reducing manufacturing complexity and increasing repeatability in placing the electrical terminals 26 on the electrical bus 18. Further, the tape example using the first adhesive 34 may facilitate accurate void formation. The first adhesive 34 may be activated or cured by pressure and/or electromagnetic means. In the electromagnetic curing example of the first adhesive 34, the electromagnetic radiation used may be ultraviolet light. In an exemplary method of applying the electrical terminals 26 to the electrical bus 18, the protective coating of the first adhesive 34 may be removed, the first adhesive 34 may be cured (e.g., by shining ultraviolet light on the first adhesive 34), and the electrical terminals 26 may be crimped onto the electrical bus 18 and the electrical terminals 26 spread from side to ensure proper connection.

In the depicted example, the second adhesive 60 is located within the void defined by the first adhesive 34. In alternative examples, the first and

second adhesives

34, 60 may be configured in a stripe pattern, or in other configurations including sufficient holding force from the first adhesive 34, and electrical conductivity from the second adhesive 60. The relative volume ratio of the first adhesive 34 to the second adhesive 60 may be about 1/99, 10/90, 20/80, 30/70, 40/60, 50/50, 60/40, 70/30, 80/20, 99/1, respectively, and all values therebetween. As described above, the first adhesive 34 may generally surround the second adhesive 60. Such an example may be advantageous to protect the second adhesive 60 from environmental damage (e.g., due to water, sulfur, dust, dirt present within the vehicle 10) that may cause discoloration or loss of conductivity of the second adhesive 60. The second adhesive 60 may be composed of a metal-containing epoxy (e.g., silver, gold, copper, platinum, etc.) and/or other conductive epoxy and adhesive. An epoxy example of the second adhesive 60 may facilitate retention of the electrical bus 18 by the electrical terminals 26.

According to various examples, the electrical terminals 26 may be applied to the electrical bus 18 by not compressing or only slightly compressing the second adhesive 60. In other words, the second adhesive 60 may exhibit no residual compressive stress, nominal compressive stress, or minimal compressive stress. For example, the second adhesive 60 may be compressed with respect to the electrical bus 18 only in order to ensure proper electrical connection between the connector 30 and the electrical bus 18. The second adhesive 60, when applied to the connector 30, may be substantially flush with the first adhesive 34 along the interface of the first and

second adhesives

34, 60 with the electrical bus 18. Since the second adhesive 60 is only slightly compressed or not compressed during application of the electrical terminals 26 to the electrical bus 18, the second adhesive 60 may have an initial height or thickness that is substantially the same as a final thickness after application of the electrical terminals 26 to the electrical bus 18 (e.g., less than or equal to about 10%, about 9%, about 8%, about 7%, about 6%, about 5%, about 4%, about 3%, about 2%, about 1%, or less than or equal to about 0.5% of the initial height or thickness). Furthermore, the volume of the second adhesive 60 may remain substantially unchanged before and after the electrical terminals 26 are applied to the electrical bus 18.

The conformal coating 38 is located on the connector 30 and the first and

second adhesives

34, 60 and may extend onto the electrical bus 18. Conformal coating 38 can be composed of a polymer and/or an elastomeric material (e.g., an acrylic, epoxy, or polyurethane resin). The polymeric and/or elastomeric material allows the conformal coating 38 to take on the shape of the electrical terminal 26. Conformal coating 38 can be composed of a transparent, translucent, or opaque material. The thickness of the conformal coating may be between about 10 μm to about 500 μm, or between about 25 μm to about 250 μm. Conformal coating 38 can be applied using brush coating, spray coating, dip coating, or other application methods. Conformal coating 38 can be cured or dried using heat (e.g., in an oven) and/or using electromagnetic radiation (e.g., ultraviolet light). The use of the conformal coating 38 may advantageously provide protection from moisture, dust, chemicals, and uncoated temperature limitations that may cause damage or failure of the electrical terminals 26.

Referring now to fig. 3A and 3B, in the illustrated example of the electrical terminal 26, the connector 30 integrally defines a spring tab 30B. In this example, the first adhesive 34 may still be used to connect and secure the connector 30 to the electrical bus 18. As previously described, the first adhesive 34 defines a void through which the spring tab 30B contacts the electrical bus 18. In the illustrated example, the spring tab 30B extends downwardly toward the inner surface 14B of the window 14 to contact the electrical bus 18. The connector 30 may define a gap 30C positioned around the spring plate 30B, or the spring plate 30B may be generally flush or in line with the rest of the connector 30. While shown as defining the spring plate 30B near the center of the connector 30, it should be understood that the spring plate 30B may be positioned anywhere on the connector 30. The electrical contact 68 is located on the spring plate 30B on a side proximate to the electrical bus 18. The electrical contacts 68 are configured to electrically connect the spring plate 30B to the electrical bus 18. The electrical contacts 68 may include a conductive metal, such as gold, silver, platinum, copper, and/or combinations thereof. The use of the spring tab 30B may be advantageous to provide a force to electrically connect the electrical contact 68 to the electrical bus 18. It should be appreciated that the force provided by the spring plate 30B may be less than the adhesive force provided by the first adhesive 34. In examples utilizing the spring plate 30B, electrical energy may be transmitted through the spring plate 30B to enter or exit the electrical bus 18.

Various advantages may be provided using the present disclosure. First, the example of uv curable and peel-and-paste using the first adhesive 34 may reduce manufacturing time and costs associated with positioning the electrical terminals 26 on the electrical bus 18. Second, the use of an adhesive to secure the electrical terminals 26 to the electrical bus 18 allows the electrical terminals 26 to be connected to the electrical bus 18 without the use of lead-containing solder. Third, the use of the conformal coating 38 may protect the electrical terminals 26 from exposure to the environment within the vehicle 10. Fourth, the example of using the spring tab 30B of the connector 30 makes the connection between the connector 30 and the electrical bus 18 secure and reliable. Fifth, the use of the first and

second adhesives

34, 60 allows the connector 30 to retain better than soldering at high temperatures (e.g., in sunlight falling onto the frit glaze 50). Sixth, by removing the solder from the electrical terminals 26 (i.e., an elevated temperature may be required), glass breakage (e.g., breakage of the window 14) caused by localized heating may be reduced and/or eliminated.

According to various embodiments, a vehicle includes a window defining an outer surface and an inner surface. An electrical bus is located on the inner surface. An electrical component is located on the window and is electrically connected to the bus. The electrical terminals are located on the bus. The connector is electrically connected to the bus. An adhesive is located between the connector and the electrical bus. A conformal coating is over the connector and the adhesive. Embodiments of the vehicle may include any one or combination of the following features:

the connector defines a connector piece;

the connector comprises a metal;

the electrical component is a heating wire;

the electrical component is an antenna;

the adhesive extends near the perimeter of the connector;

frit glaze is located between the inner surface of the window and the electrical bus;

a plurality of electrical terminals located on the electrical bus;

the adhesive is conductive;

the conformal coating extends onto the electrical bus;

the electrical terminals are configured to transmit electrical energy to the electrical bus; and

the connector defines a leaf spring.

Modifications of the present disclosure will occur to those skilled in the art to which the disclosure pertains or to the use of the same. It is to be understood, therefore, that the embodiments shown in the drawings and described above are for illustrative purposes only and are not intended to limit the scope of the present disclosure, which is defined by the appended claims as interpreted according to the principles of patent law including the doctrine of equivalents.

For the purposes of this disclosure, the term "connected" (and all forms thereof, now, in progress, in the past, etc.) generally refers to two components (electronic or mechanical) that are directly or indirectly connected to one another. Such engagement may be fixed in nature or movable in nature. Such joining may be achieved by two members (electrical or mechanical) and any additional intermediate members integrally formed with each other or with the two members as a single unitary body. Unless otherwise indicated, such connection may be permanent in nature or may be removable or releasable in nature.

As used herein, the term "about" means that the amounts, dimensions, formulations, parameters, and other quantities and characteristics are not and need not be exact, but may be approximated and/or greater or lesser as desired to reflect tolerances, conversion factors, rounding off, measurement error and the like, as well as other factors known to those of skill in the art. When the term "about" is used to describe a range of values or endpoints, it is to be understood that the present disclosure includes the specific value or endpoint mentioned. Whether a range of values or endpoints is described in the specification as "about" or not, the range of values or endpoints is intended to include both the embodiments: one modified by "about" and the other not modified by "about". It will also be understood that the endpoints of each of the ranges are significant both in relation to the other endpoint, and independently.

The term "substantially" (and all forms thereof) as used herein is intended to indicate that the feature so described is equivalent or approximately equivalent to a numerical value or description. For example, a "substantially planar" surface is intended to mean a planar or approximately planar surface. Further, "substantially" is intended to mean that the two values are equal or approximately equal. In some embodiments, "substantially" may refer to values within about 10% of each other, such as values within about 5% of each other, or within about 2% of each other.

As used herein, the terms "the," "an," or "one" mean "at least one," and should not be limited to being construed as "only one," unless explicitly indicated to the contrary. Thus, unless the context clearly indicates to the contrary, reference to "a component" for example includes embodiments having two or more such components.

Claims

1. A vehicle, comprising:

a window defining an outer surface and an inner surface;

an electrical bus located on the inner surface;

an electrical component located on the window and electrically connected to the electrical bus; and

an electrical terminal on the electrical bus, the electrical terminal comprising:

a connector electrically connected to the electrical bus;

an adhesive between the connector and the electrical bus; and

a conformal coating positioned over the connector and the adhesive;

wherein the connector defines a leaf spring.

2. The vehicle of claim 1, wherein the connector defines a connector piece.

3. The vehicle of claim 2, wherein the connector comprises metal.

4. The vehicle of claim 1, wherein the electrical component is a heater wire.

5. The vehicle of claim 1, wherein the electrical component is an antenna.

6. The vehicle of claim 1, wherein the adhesive extends proximate a perimeter of the connector.

7. The vehicle of claim 1, further comprising:

8. The vehicle of claim 1, wherein a plurality of the electrical terminals are located on the electrical bus.

9. The vehicle of any of claims 1-5, wherein the adhesive is electrically conductive.

10. The vehicle of any of claims 1-8, wherein the conformal coating extends onto the electrical bus.

11. The vehicle of any of claims 1-8, wherein the electrical terminals are configured to transmit electrical energy to the electrical bus.

12. A vehicle, comprising:

a window defining an outer surface and an inner surface; and

an electrical bus located on the inner surface; and

a connector;

a first adhesive and a second adhesive connecting the connector to the electrical bus, wherein the second adhesive is electrically conductive; and

a conformal coating positioned over the connector and the first and second adhesives;

wherein the connector defines a leaf spring.

13. A vehicle, comprising:

a window;

an electrical bus located on the window; and

a connector defining a leaf spring; and

an adhesive connecting the connector and the electrical bus, wherein the adhesive defines a void through which the spring tab contacts the electrical bus.